Flexible Duct

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Flexible ducting for residential and light commercial ventilation — connecting fans, MVHR units, and extract terminals to rigid duct runs where a straight rigid connection isn't practical. This collection covers the Verplas flexible and semi-rigid hose range in diameters from 100mm to 250mm, spanning four distinct product types suited to different installation conditions. Choosing the right type matters: material, wall construction, and temperature rating each affect long-term performance, condensation risk, and noise levels in ways that a single generic "flex hose" won't address across all applications. PVC flexible hose The standard round PVC flexible hose — available in 100mm in lengths of 1m, 3m, 6m, and 15m — is the go-to short-section connector for bathroom and kitchen extract fans, connecting the fan spigot to the rigid duct run or external wall termination. It compresses and extends to navigate tight ceiling voids and wall penetrations, and accepts standard push-fit fittings from the Verplas round ducting range. This is an uninsulated product; runs through cold spaces should be kept as short as possible to limit condensation risk. Heavy duty PVC-coated polyester fibre hose The heavy duty range is manufactured from PVC-coated polyester fibre rather than plain PVC, giving it significantly greater crush resistance and a wider operating temperature range of -30°C to +80°C. Available in diameters from 100mm to 250mm in 6m boxes, it is the correct choice where the hose is subject to compression, foot traffic risk in loft installations, or where higher temperature tolerance is needed — for example, in proximity to plant or in commercial extract applications. The wider size range (up to 250mm) also makes it appropriate for higher-flow MEV branch connections that standard PVC hose cannot accommodate. Semi-rigid aluminium hose Available in 100mm, 125mm, and 150mm in 3m boxes, semi-rigid aluminium hose holds its shape once bent rather than springing back, which makes i